SICK microScan3 Core I/O Operating instructions

O P E R A T I N G I N S T R U C T I O N S

microScan3 Core I/O

Safety laser scanner

Described product

micr

oScan3 Core I/O

Manufacturer

SICK AG

Erwin-Sick-Str. 1

79183 Waldkirch

Germany

Legal information

T

his work is protected by copyright. Any rights derived from the copyright shall be

reserved for SICK AG. Reproduction of this document or parts of this document is only

permissible within the limits of the legal determination of Copyright Law. Any modifica‐

tion, abridgment or translation of this document is prohibited without the express writ‐

ten permission of SICK AG.

The trademarks stated in this document are the property of their respective owner.

Original document

T

his document is an original document of SICK AG.

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Contents

1 About this document........................................................................ 8

1.1 Function of this document....................................................................... 8

1.2 Scope......................................................................................................... 8

1.3 Target groups of these operating instructions........................................ 8

1.4 Further information................................................................................... 8

1.5 Symbols and document conventions...................................................... 9

2 Safety information............................................................................ 10

2.1 General safety notes................................................................................ 10

2.2 Intended use............................................................................................. 11

2.3 Inappropriate use..................................................................................... 11

2.4 Requirements for personnel qualifications............................................. 11

3 Product description........................................................................... 13

3.1 Setup and function................................................................................... 13

3.2 Product characteristics............................................................................ 15

3.2.1 Device overview....................................................................... 15

3.2.2 Variants.................................................................................... 16

3.2.3 Status indicators...................................................................... 16

3.2.4 Connections............................................................................. 17

3.2.5 System plug.............................................................................. 17

3.2.6 Field types................................................................................ 18

3.2.7 Field set.................................................................................... 20

3.2.8 Monitoring case....................................................................... 21

3.3 Example applications............................................................................... 22

4 Project planning................................................................................ 25

4.1 Manufacturer of the machine.................................................................. 25

4.2 Operator of the machine.......................................................................... 25

4.3 Assembly................................................................................................... 25

4.3.1 Protection from influences...................................................... 27

4.3.2 Preventing unprotected areas................................................. 28

4.3.3 Response time of the safety laser scanner........................... 30

4.3.4 Reference contour monitoring................................................ 30

4.3.5 Monitoring case switching time.............................................. 32

4.3.6 Hazardous area protection...................................................... 34

4.3.7 Hazardous point protection..................................................... 41

4.3.8 Access protection.................................................................... 44

4.3.9 Mobile hazardous area protection.......................................... 46

4.4 Integrating the equipment into the electrical control............................. 52

4.4.1 Voltage supply.......................................................................... 54

4.4.2 USB connection....................................................................... 54

4.4.3 OSSDs....................................................................................... 54

4.4.4 Control inputs........................................................................... 56

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4.4.5 Universal inputs, universal outputs, universal I/Os.............. 57

4.4.6 Restart interlock...................................................................... 57

4.4.7 External device monitoring (EDM).......................................... 60

4.4.8 Connection diagrams.............................................................. 60

4.5 Testing plan............................................................................................... 62

4.5.1 Minimum requirements for the regular thorough check....... 63

4.5.2 Recommendations for further thorough checks.................... 63

4.5.3 Carrying out thorough checks................................................. 63

5 Mounting............................................................................................. 66

5.1 Safety......................................................................................................... 66

5.2 Unpacking.................................................................................................. 66

5.3 Mounting procedure................................................................................. 66

5.3.1 Direct mounting....................................................................... 68

5.3.2 Mounting using mounting kit 1............................................... 69

5.3.3 Mounting using mounting kit 2............................................... 69

6 Electrical installation........................................................................ 72

6.1 Safety......................................................................................................... 72

6.2 Connection overview................................................................................ 73

6.2.1 microScan3 Core..................................................................... 74

6.3 Pin assignment......................................................................................... 74

6.3.1 Connecting cable with M12 plug connector.......................... 74

7 Configuration..................................................................................... 75

7.1 General requirements.............................................................................. 75

7.1.1 Delivery state........................................................................... 75

7.2 Safety Designer......................................................................................... 75

7.2.1 Installation assistant............................................................... 75

7.2.2 Projects..................................................................................... 75

7.2.3 User interface.......................................................................... 76

7.2.4 User groups.............................................................................. 76

7.2.5 Settings.................................................................................... 77

7.2.6 Configuration............................................................................ 78

7.3 Overview.................................................................................................... 80

7.3.1 Functional scope...................................................................... 81

7.4 Reading configuration.............................................................................. 82

7.5 Identification............................................................................................. 83

7.6 Application................................................................................................ 84

7.7 Monitoring plane....................................................................................... 85

7.7.1 Parameters for the monitoring plane..................................... 86

7.7.2 Parameters for the safety laser scanner................................ 88

7.8 Reference contour field............................................................................ 89

7.9 Fields......................................................................................................... 90

7.9.1 Using the field editor............................................................... 91

7.9.2 Creating field set templates.................................................... 94

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7.9.3 Importing and exporting field sets and fields........................ 95

7.9.4 Background image................................................................... 95

7.9.5 Settings for the field editor..................................................... 96

7.9.6 Editing fields using coordinates.............................................. 97

7.9.7 Drawing in points that cannot be monitored......................... 98

7.9.8 Enable propose field................................................................ 100

7.10 Inputs and outputs, local......................................................................... 101

7.10.1 Input signals............................................................................. 102

7.10.2 Output signals.......................................................................... 102

7.10.3 Further settings for some signals........................................... 103

7.11 Monitoring cases...................................................................................... 105

7.11.1 Settings for monitoring case tables........................................ 105

7.11.2 Settings for monitoring cases................................................. 106

7.11.3 Input conditions....................................................................... 106

7.11.4 Cut-off paths............................................................................ 106

7.11.5 Assigning field sets.................................................................. 107

7.12 Simulation................................................................................................. 108

7.13 Transfer..................................................................................................... 109

7.14 Starting and stopping safety function..................................................... 110

7.15 Reports...................................................................................................... 110

7.16 Service....................................................................................................... 111

7.16.1 Device restart........................................................................... 111

7.16.2 Factory settings........................................................................ 112

7.16.3 Managing passwords............................................................... 112

7.16.4 Optics cover calibration........................................................... 113

8 Commissioning.................................................................................. 114

8.1 Safety......................................................................................................... 114

8.2 Alignment.................................................................................................. 114

8.3 Switching on.............................................................................................. 115

8.4 Thorough check........................................................................................ 116

9 Operation............................................................................................ 118

9.1 Safety......................................................................................................... 118

9.2 Regular thorough check........................................................................... 118

9.3 LEDs........................................................................................................... 118

9.4 Buttons and display.................................................................................. 119

10 Maintenance...................................................................................... 124

10.1 Safety......................................................................................................... 124

10.2 Regular cleaning....................................................................................... 124

10.3 Replacing the optics cover....................................................................... 125

10.4 Replacing the safety laser scanner......................................................... 127

10.4.1 Replacing the safety laser scanner without system plug...... 128

10.4.2 Completely replacing the safety laser scanner...................... 128

10.5 Replacing the system plug....................................................................... 129

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10.6 Regular thorough check........................................................................... 130

11 Troubleshooting................................................................................. 131

11.1 Safety......................................................................................................... 131

11.2 Diagnostic LEDs........................................................................................ 131

11.2.1 Status LEDs.............................................................................. 131

11.3 Diagnostics using the display.................................................................. 132

11.3.1 Status display........................................................................... 132

11.3.2 Detailed diagnostics................................................................ 134

11.3.3 Fault display............................................................................. 136

11.4 Diagnostics using Safety Designer.......................................................... 138

11.4.1 Data recorder........................................................................... 139

11.4.2 Event history............................................................................. 140

11.4.3 Message history....................................................................... 142

12 Decommissioning............................................................................. 143

12.1 Disposal..................................................................................................... 143

13 Technical data.................................................................................... 144

13.1 Variant overview........................................................................................ 144

13.2 Version numbers and functional scope.................................................. 144

13.3 Data sheet................................................................................................. 145

13.3.1 microScan3 Core I/O............................................................... 145

13.4 Response times........................................................................................ 150

13.5 Course of the OSSD test over time.......................................................... 152

13.6 Sensing range........................................................................................... 152

13.7 Dimensional drawings.............................................................................. 157

14 Ordering information........................................................................ 158

14.1 Scope of delivery....................................................................................... 158

14.2 Ordering information................................................................................. 158

15 Spare parts......................................................................................... 159

15.1 Safety laser scanner without system plug.............................................. 159

15.2 System plug............................................................................................... 159

15.3 Additional spare parts.............................................................................. 159

16 Accessories........................................................................................ 160

16.1 Brackets.................................................................................................... 160

16.2 Connection technology............................................................................. 162

16.3 Alignment aid............................................................................................ 163

16.4 Cleaning agent.......................................................................................... 163

16.5 Test rods.................................................................................................... 163

17 Glossary.............................................................................................. 164

18 Annex.................................................................................................. 168

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18.1 Compliance with EU directives................................................................. 168

18.2 Note on specified standards.................................................................... 169

18.3 Checklist for initial commissioning and commissioning........................ 170

18.4 Mounting methods for protection from interference from systems in

c

lose proximity.......................................................................................... 171

19 List of figures..................................................................................... 174

20 List of tables....................................................................................... 177

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1 About this document

1.1 Function of this document

These operating instructions contain the information needed during the life cycle of the

s

afety laser scanner.

Operating instructions of the safety laser scanner must be made available to all people

who work with the device.

Read the operating instructions carefully and ensure that you have understood the con‐

tents completely before you work with the safety laser scanner.

1.2 Scope

The operating instructions apply to the microScan3 safety laser scanner with the follow‐

in

g type label entry in the Operating Instructions field:

•

8016344

This document is included with the following SICK part numbers (this document in all

available language versions):

•

8016344

1.3 Target groups of these operating instructions

Some chapters of these operating instructions are intended for certain target groups.

Ho

wever, the entire operating instructions are relevant for intended use of the product.

Table 1: Target groups and selected chapters of these operating instructions

Target group Chapter of these operating instructions

Project developers (planners, developers,

de

signers)

"Project planning", page 25

"Configuration", page 75

"Technical data", page 144

"Accessories", page 160

Installers "Mounting", page 66

Electricians "Electrical installation", page 72

Safety experts (such as CE authorized repre‐

sent

atives, compliance officers, people who

test and approve the application)

"Project planning", page 25

"Configuration", page 75

"Commissioning", page 114

"Technical data", page 144

"Checklist for initial commissioning and com‐

missioning", page 170

Operators "Operation", page 118

"T

roubleshooting", page 131

Maintenance personnel "Maintenance", page 124

"T

roubleshooting", page 131

1.4 Further information

www.sick.com

T

he following information is available via the Internet:

•

Further language versions of these operating instructions

•

Data sheets and application examples

•

CAD data of drawings and dimensional drawings

•

Certificates (such as the EU declaration of conformity)

1 A

BOUT THIS DOCUMENT

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•

Guide f

or Safe Machinery (six steps to a safe machine)

•

Safety Designer (software for configuring the safety laser scanner and further

safety solutions)

1.5 Symbols and document conventions

The following symbols and conventions are used in this document:

Safety notes and other notes

DANGER

Indic

ates a situation presenting imminent danger, which will lead to death or serious

injuries if not prevented.

WARNING

Indic

ates a situation presenting possible danger, which may lead to death or serious

injuries if not prevented.

CAUTION

Indic

ates a situation presenting possible danger, which may lead to moderate or minor

injuries if not prevented.

NOTICE

Indic

ates a situation presenting possible danger, which may lead to property damage if

not prevented.

NOTE

Indic

ates useful tips and recommendations.

Instructions to action

b

The arrow denotes instructions to action.

1. The sequence of instructions for action is numbered.

2. Follow the order in which the numbered instructions are given.

✓

The check mark denotes the result of an instruction.

LED symbols

These symbols indicate the status of an LED:

o

The LED is off.

Ö

The LED is flashing.

O

The LED is illuminated continuously.

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2 Safety information

2.1 General safety notes

This chapter contains general safety information about the safety laser scanner.

F

urther information about specific product use situations can be found in the relevant

chapters.

DANGER

H

azard due to lack of effectiveness of the protective device

In the case of non-compliance, it is possible that the dangerous state of the machine

may not be stopped or not stopped in a timely manner.

b

Please read this document carefully and make sure that you understand the con‐

tent fully before working with the device.

b

Follow all safety notes in this document.

WARNING

In

visible laser radiation

Laser class 1M

IEC 60825-1:2007 & 2014

Complies with 21 CFR

1040.10 and 1040.11

except for deviations

pursuant to Laser Notice

No. 50, June 2007

CAUTION

LASER

1M

Figure 1: Laser class 1M

T

his device complies with the following standards:

•

IEC 60825-1:2007/EN 60825-1:2007

•

IEC 60825-1:2014/EN 60825-1:2014

•

21 CFR 1040.10 and 1040.11, except for changes due to Laser Notice No. 50 of

24/06/2007

The safety laser scanner’s accessible laser is not hazardous as long as the beam cross

section is not reduced by optical instruments, such as magnifying glasses, lenses, tele‐

scopes.

The curved part of the optics cover is the outlet for the laser radiation.

The laser marking is located on the underside of the safety laser scanner.

b

You must comply with the latest version of the applicable laser safety regulations.

CAUTION

If an

y operating or adjusting devices other than those specified in this document are

used or other methods are employed, this can lead to dangerous exposure to radiation.

b

Only use the operating or adjusting devices specified in this document.

b

Only follow the methods specified in this document.

b

Do not open the housing, except for the purposes of the installation and mainte‐

nance work specified in these operating instructions.

2 SAFETY INFORMATION

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CAUTION

Ob

serving the safety laser scanner through optical instruments (such as magnifying

glasses, lenses, telescopes) may be hazardous for the eyes.

b

Do not look directly at the laser beam source using optical instruments.

2.2 Intended use

The safety laser scanner is an electro-sensitive protective device (ESPE) and is suitable

f

or the following applications:

•

Hazardous area protection

•

Hazardous point protection

•

Access protection

•

Mobile hazardous area protection (e.g. protection from automated guided vehi‐

cles)

The safety laser scanner must only be used within the limits of the prescribed and

s

pecified technical data and operating conditions at all times.

Incorrect use, improper modification of or tampering with the safety laser scanner will

invalidate any warranty from SICK; in addition, any responsibility and liability of SICK for

damage and secondary damage caused by this is excluded.

2.3 Inappropriate use

DANGER

H

azard due to lack of effectiveness of the protective device

Persons and parts of the body to be protected may not be recognized in case of non-

observance.

The safety laser scanner works as an indirect protective measure and cannot provide

protection from pieces thrown from application nor from emitted radiation. Transparent

objects are not detected.

b

You must only use the safety laser scanner as an indirect protective measure.

The safety laser scanner is not suitable for the following applications, among others:

•

Out

doors

•

Underwater

•

In explosion-hazardous areas

2.4 Requirements for personnel qualifications

The safety laser scanner must only be configured, installed, connected, commissioned

and ser

viced by qualified safety personnel.

Project planning

For project planning, a person is considered competent when he/she has expertise and

experience in the selection and use of protective devices on machines and is familiar

with the relevant technical rules and national work safety regulations.

Mechanical mounting

For mechanical mounting, a person is considered competent when he/she has the

expertise and experience in the relevant field and is sufficiently familiar with the appli‐

cation of the protective device on the machine that he/she can assess its operational

safety status.

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Electrical installation

F

or electrical installation, a person is considered competent when he/she has the

expertise and experience in the relevant field and is sufficiently familiar with the appli‐

cation of the protective device on the machine that he/she can assess its operational

safety status.

Configuration

For configuration, a person is considered competent when he/she has the expertise

and experience in the relevant field and is sufficiently familiar with the application of

the protective device on the machine that he/she can assess its work safety aspects.

Commissioning

For commissioning, a person is considered competent when he/she has the expertise

and experience in the relevant field and is sufficiently familiar with the application of

the protective device on the machine that he/she can assess its operational safety sta‐

tus.

Operation and maintenance

For operation and maintenance, a person is considered competent when he/she has

the expertise and experience in the relevant field and is sufficiently familiar with the

application of the protective device on the machine and has been instructed by the

machine operator in its operation.

An operator may clean the safety laser scanner and carry out specific thorough checks

following instruction. More information for the operator of the machine: see "Regular

cleaning", page 124, see "Operation", page 118.

2 S

AFETY INFORMATION

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3 Product description

3.1 Setup and function

The safety laser scanner is an electro-sensitive protective device (ESPE), which two-

dimensionall

y scans its environment with infrared laser beams.

The safety laser scanner forms a protective field using the invisible laser beams. This

protective field protects the hazardous area and enables hazardous point protection,

access protection or hazardous area protection. As soon as an object is situated in the

protective field, the safety laser scanner signals the detection by means of a signal

change at the safety output (OSSD for example). The machine or its control must safely

analyze the signals (for example using a safe control or safety relays) and stop the dan‐

gerous state.

The safety laser scanner operates on the principle of time-of-flight measurement. It

emits light pulses in regular, very short intervals. If the light strikes an object, it is

reflected. The safety laser scanner receives the reflected light. The safety laser scanner

calculates the distance to the object based on the time interval between the moment of

transmission and moment of receipt (∆t).





t

∆t





Figure 2: Principle of time-of-flight measurement

1

Transmitted light pulse

2

Reflected light pulse

A rotating mirror is situated in the safety laser scanner. The mirror deflects the light

pulse

s so that they scan a fan-shaped area.

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227,5°

0°

90°

-47,5°



Figure 3: Light pulses scan an area

1

Angular resolution: the angular distance (in degrees) between 2 distance measurements

Scan cycle time and resolution

T

he time that the mirror requires for one rotation is called the scan cycle time. The

number of light pulses per unit of time is constant. The scan cycle time and the number

of light pulses per unit of time determine the angular resolution. The scanning range for

a given object resolution depends on the angular resolution. The object resolution indi‐

cates the minimum size that an object must be to allow it to be detected safely. The

scan cycle time also influences the response time.

Slightly different scan cycle times can be used to minimize mutual interference in

neighboring safety laser scanners.

The resolution in protective fields can be set to various values according to the

intended purpose.

Geometry of the scan plane

T

he laser beams emitted cover a sector of a circle, so an object can be detected in an

area of up to 275°.

The sector of a circle covered ranges from –47.5° to 227.5°, where 90° denotes the

axis of the safety laser scanner from the back to the front. When viewing the safety

laser scanner from above, the direction of rotation of the mirror and the deflected light

pulses is counterclockwise, see figure 3.

3 P

RODUCT DESCRIPTION

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3.2 Product characteristics

3.2.1 Device overview

















Figure 4: Device overview

1

Optics cover

2

Display

3

Keypad

4

USB connection

5

Status LEDs

6

Additional LEDs for ON state and OFF state

7

Safety laser scanner without system plug

8

System plug

Different variants of the safety laser scanner are available, see "V

ariants", page 16.

Further information about the variants see "Variant overview", page 144.

All variants have an optics cover and the rotating mirror is located below the optics

cover. The light pulses are emitted and the reflected light pulses are received through

the optics cover.

The display with 4 pushbuttons is located below the optics cover. The safety laser scan‐

ner also has a number of light emitting diodes, see "Status indicators", page 16, see

"Buttons and display", page 119.

Information about connections: see "Connections", page 17.

The safety laser scanner can be mounted and operated in any alignment. In this docu‐

ment, position and direction information is used as follows with respect to the safety

laser scanner, as long as different usage is not indicated separately:

•

The top is the side of the safety laser scanner on which the optics cover is located.

•

The bottom is the side of the safety laser scanner opposite the optics cover.

•

The front is the side of the safety laser scanner on which the display is located.

The 90° angle of the sector of a circle scanned by the safety laser scanner points

in this direction.

•

The back is the side of the safety laser scanner opposite the display. The sector of

a circle not scanned by the safety laser scanner lies in this direction.

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3.2.2 Variants

The safety laser scanner is delivered in different variants. You will find an overview of

im

portant distinguishing features of the variants in the following.

Performance package

The Core performance package is characterized by the number of configurable fields

and the number of safety switching functions (OSSD pairs).

•

microScan3 core I/O: 8 fields; safety output: 1 OSSD pair

Integration in the control

T

he safety laser scanner communicates with the machine controller as follows:

•

I/O: local inputs and outputs (incl. OSSDs)

Protective field range

The safety laser scanner is available in variants with the following maximum protective

field range:

•

4.0 m

•

5.5 m

•

9.0 m

Further topics

•

"Variant overview", page 144

3.2.3 Status indicators

The safety laser scanner outputs important status information using a number of light

emit

ting diodes. The safety laser scanner has a graphical display and 4 pushbuttons for

additional information.

4 status light emitting diodes are located directly above the display.

1 2 3 4

Figure 5: Status LEDs

T

able 2: Status LEDs

Number Function Color Meaning

1

OFF state Red Lights up red when the OSSD pair is

in t

he OFF state.

2

ON state Green Lights up green when the OSSD pair

is in t

he ON state.

3

Warning field Yellow Shines yellow if at least one warning

field is interrupted.

4

Restart interlock Yellow Setup with reset: Flashes if the

restart interlock has been triggered.

Configuration with automated restart

after a time: Lights up while the con‐

figured time to restart expires.

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The OFF state and ON state light emitting diodes can be found in multiple locations on

t

he safety laser scanner. 3 additional sets are arranged in pairs on the base of the

optics cover. So the light emitting diodes can also be seen in many cases when it is not

possible to see the display, e.g. due to the mounting situation or because it is hidden

from the operator’s position.

More information about the meaning of the light emitting diodes see "Diagnostic LEDs",

page 131.

Depending on the configuration, the display shows current information about the safety

laser scanner’s status, see "Buttons and display", page 119.

3.2.4 Connections

•

1 × connec

ting cable with male connector, M12, A-coded for voltage supply,

OSSDs and universal I/Os (can be used as universal input, universal output or in

pairs as static control input)

•

1 × female connector, USB 2.0 Mini-B for configuration and diagnosis

1)

OSSD

An O

SSD is a safety switching output. The functionality of each OSSD is tested periodi‐

cally. OSSDs are always connected in pairs and must undergo dual-channel analysis for

safety reasons. An OSSD pair is formed from 2 OSSDs that are connected and analyzed

together.

Control input

A control input receives signals, e.g. from the machine or from the control. Use of con‐

trol inputs is how the protective device receives information about the conditions at the

machine, e.g., if there is a change of operating mode. If the protective device is config‐

ured appropriately, it will activate a different monitoring case after receiving a new con‐

trol input.

The control input information must be transmitted reliably. Generally, at least 2 sepa‐

rate channels are used to do this.

A static control input is a dual-channel control input, which evaluates the status of every

c

hannel as the value 0 or 1. The signal states of a static control input give a unique

signal pattern. This signal pattern activates a monitoring case.

Universal I/O

Universal I/O can be configured as universal input or as universal output.

Universal input

Depending on the device, a universal input can be used for resetting, external device

monitoring (EDM), sleep mode, or restarting the protective device, for example. If sleep

mode is activated by a universal input, the sleep mode must not be used for safety

applications. Certain universal inputs can also be used in pairs as a static control input.

Universal output

A uni

versal output outputs a signal depending on its configuration, e.g. if the reset

pushbutton needs to be pushed or if the optical cover is contaminated. A universal out‐

put must not be used for safety functions.

3.2.5 System plug

A system plug is required to operate the safety laser scanner.

1)

T

he USB connection may only be used temporarily and only for configuration and diagnostics.

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The base plate is the system plug (see

figure 4, page 15).

The safety laser scanner’s internal configuration memory is integrated in the system

plug. The system plug and all connecting cables can remain at the installation site

when the safety laser scanner is replaced. The system plug is detached from the defec‐

tive safety laser scanner and connected to the new safety laser scanner. The new

safety laser scanner reads the configuration from the configuration memory when

switching on.

3.2.6 Field types

During operation, the safety laser scanner uses its laser beams continuously to check

whe

ther people or objects are present in one or more areas. The areas to be checked

are called fields. A distinction is made between the following field types, depending on

how the safety laser scanner is used:

•

Protective field

•

Reference contour field

•

Contour detection field

•

Warning field

Table 3: Field types and their function

Protective field Reference con‐

t

our field

Contour detec‐

tion field

Warning field

Safe switch off

(according to ISO

13849-1)

Yes (PL d) Yes (PL d) Yes (PL d) No

Max. scanning

r

ange of the

safety laser scan‐

ner

Variant-depen‐

dent:

4.0 m

5.5 m

9.0 m

Variant-depen‐

dent

:

4.0 m

5.5 m

9.0 m

Variant-depen‐

dent

:

4.0 m

5.5 m

9.0 m

Variant-depen‐

dent

:

40 m

64 m

Purpose Detection and

pr

otection of peo‐

ple

Tamper protec‐

tion

e.g. door monitor‐

ing

Functional use

(no safety-rele‐

vant use)

Protective field

T

he protective field protects the hazardous area of a machine or vehicle. As soon as the

electro-sensitive protective device detects an object in the protective field, it switches

the associated safety outputs to the OFF state. This signal can be passed to controllers

resulting in the dangerous state coming to an end, e.g. to stop the machine or the vehi‐

cle.

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Figure 6: Protective field, shown in red in this document

Reference contour field

T

he reference contour field monitors a contour of the environment. The safety laser

scanner switches all safety outputs to the OFF state if a contour does not match the set

parameters, because, for example, the mounting situation of the safety laser scanner

were changed.

National and international standards require or recommend that a reference contour is

monitored, if the safety laser scanner is used in vertical operation for hazardous point

protection or for access protection.

The reference contour field detects unintentional and intentional changes to the posi‐

tion or alignment of the safety laser scanner. Unintentional changes may be caused by

vibrations for example. An example of an intentional change is deliberate tampering to

disable the safety laser scanner’s functionality.

Figure 7: Reference contour field, shown in blue-green in this document

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Subject to change without notice

Contour detection field

T

he contour detection field monitors a contour of the environment. The safety laser

scanner switches the associated safety outputs to the OFF state if a contour does not

match the set parameters, because, for example, a door or flap is open.

The contour detection field is used for detecting changes in the environment and only

switches the outputs in the current monitoring case. By contrast, the reference contour

field is used for detecting changes at the safety laser scanner and switches all safety

outputs.

Warning field

T

he warning field monitors larger areas than the protective field. Simple switching func‐

tions can be triggered with the warning field, e.g. a warning light or an acoustic signal

can be triggered if a person approaches, even before the person enters the protective

field.

The warning field must not be used for safety applications.

Figure 8: Warning field, shown in yellow or orange in this document

3.2.7 Field set

A field set consists of one or more fields. The fields in a field set are monitored simulta‐

neousl

y.

A field set can contain various types of field.

A typical application is the use of a protective field with one or more warning fields: if a

vehicle approaches a person, a warning field triggers an optical or acoustic signal. If the

person does not react to this and the vehicle continues to approach, the safety laser

scanner detects an object in the protective field and switches the associated safety out‐

puts to the OFF state. The vehicle stops before it reaches the person.

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SICK microScan3 Core I/O Operating instructions

SICK microScan3 Core I/O Operating instructions

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